Why do you think the economy can't grow indefinitely? Living standards have skyrocketed in the last 200 years. Most people no longer die of appendicitis or dysentary in the USA. We have a/c now. And unlimited access to free information.

To your measure of food and work hours, here's 70 years of progress in less work buying more food-- https://cepr.net/publications/in-the-good-old-days-one-fourt...